I'm trying to type this in latex :
f*g = a
"space" = b + c
(where "space" is real space)
When I do it in latex this way :
f*g = a \\ = b + c
I get this :
f*g = a
= b + c
Any idea how to have the second "=" under the first one ?
Thank you

f*g = a \\ = b + c
\documentclass[a4paper,11pt]{article} \usepackage{amsmath} \begin{document} \begin{align} f\star g &=a\\ &=b+c \end{align} \end{document}
\documentclass[a4paper,11pt]{article} \usepackage{amsmath} \begin{document} \begin{align} f\star g &=a (because a>0)\\ &=b+c \end{align} \end{document}
\documentclass[a4paper,11pt]{article} \usepackage{amsmath} \begin{document} \begin{align} f\star g &=a \quad (\text{because }a>0)\\ &=b+c \end{align} \end{document}
\documentclass{article} \usepackage{amsmath} \begin{document} \begin{align} f\star g &=a\qquad\text{(because $a>0$)}\\ &=b+c \end{align} \begin{align} f\star g &=a & \text{(because $a>0$)}\\ &=b+c & \text{(because $b=0$)} \end{align} \end{document}
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